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Accounts and Other Receivables (Tables) | 12 Months Ended
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Dec. 31, 2024
Trade and other receivables [abstract] |
Summary of Accounts and Other Receivables | Accounts and other receivables as of December 31, 2024 and 2023 are as follows:
| December 31, 2024 |  | December 31, 2023
| (In millions of Korean won)
Accounts receivable |  |  |
Non-related party | ₩ | 78,368 |  |  | ₩ | 69,867 |
Related party | 3,334 |  |  | 1,972 |
Less : Loss allowance | (550) |  |  | (626) |
Accounts receivables, net | ₩ | 81,152 |  |  | ₩ | 71,213 |
| December 31, 2024 |  | December 31, 2023
| (In millions of Korean won)
Other receivables |  |  |
Non-related party | ₩ | 1,577 |  |  | ₩ | 3,642 |
Related party | — |  |  | — |
Less: Loss allowance | (5) |  |  | (5) |
Other receivables, net | ₩ | 1,572 |  |  | ₩ | 3,637 |
Summary of Changes in Loss Allowance of Accounts and Other Receivables | Changes in the loss allowance of accounts and other receivables during the years ended December 31, 2024, 2023 and 2022 are as follows:
| 2024 |  | 2023 |  | 2022
| (In millions of Korean won)
Accounts receivable |  |  |  |  |
Beginning balance | ₩ | 626 |  |  | ₩ | 319 |  |  | ₩ | 689 |
Bad debt expenses | 589 |  |  | 1,402 |  |  | 701 |
Reversal of allowance for doubtful accounts | — |  |  | — |  |  | — |
Write-off | (665) |  |  | (1,095) |  |  | (1,071) |
Ending balance | ₩ | 550 |  |  | ₩ | 626 |  |  | ₩ | 319 |
| 2024 |  | 2023 |  | 2022
| (In millions of Korean won)
Other receivables |  |  |  |  |
Beginning balance | ₩ | 5 |  |  | ₩ | 5 |  |  | ₩ | 5 |
Bad debt expenses | — |  |  | — |  |  | — |
Reversal of allowance for doubtful accounts | — |  |  | — |  |  | — |
Write-off | — |  |  | — |  |  | — |
Ending balance | ₩ | 5 |  |  | ₩ | 5 |  |  | ₩ | 5 |
Summary of ECLs and Credit Risk Exposures for Accounts and Other Receivables | Expected credit losses (ECLs) and credit risk exposures for accounts and other receivables as of December 31, 2024 and 2023 are as follows: ① Accounts receivables
As of December 31, 2024 |  | Expected loss rate |  | Carrying amount |  | Loss allowance
|  |  |  | (In millions of Korean won)
Not due or overdue less than 90 days |  | 0.4 | % |  | ₩ | 81,335 |  |  | ₩ | 351 |
More than 90 days ~ Less than 180 days |  | 22.5 | % |  | 214 |  |  | 48 |
More than 180 days ~ Less than 270 days |  | 87.0 | % |  | 13 |  |  | 11 |
More than 270 days ~ Less than 1 year |  | 100.0 | % |  | 5 |  |  | 5 |
More than 1 year |  | 100.0 | % |  | 135 |  |  | 135 |
Total |  |  |  | ₩ | 81,702 |  |  | ₩ | 550 |
As of December 31, 2023 |  | Expected loss rate |  | Carrying amount |  | Loss allowance
|  |  |  | (In millions of Korean won)
Not due or overdue less than 90 days |  | 0.6 | % |  | ₩ | 71,334 |  |  | ₩ | 438 |
More than 90 days ~ Less than 180 days |  | 3.2 | % |  | 315 |  |  | 10 |
More than 180 days ~ Less than 270 days |  | 57.4 | % |  | 27 |  |  | 16 |
More than 270 days ~ Less than 1 year |  | 87.3 | % |  | 5 |  |  | 4 |
More than 1 year |  | 100.0 | % |  | 158 |  |  | 158 |
Total |  |  |  | ₩ | 71,839 |  |  | ₩ | 626 |
② Other receivables
As of December 31, 2024 |  | Expected loss rate |  | Carrying amount |  | Loss allowance
|  |  |  | (In millions of Korean won)
Not due or overdue less than 90 days |  | — | % |  | ₩ | 1,566 |  |  | ₩ | — |
More than 90 days ~ Less than 180 days |  | — | % |  | 6 |  |  | — |
More than 180 days ~ Less than 270 days |  | — | % |  | — |  |  | — |
More than 270 days ~ Less than 1 year |  | — | % |  | — |  |  | — |
More than 1 year |  | 100 | % |  | 5 |  |  | 5 |
Total |  |  |  | ₩ | 1,577 |  |  | ₩ | 5 |
As of December 31, 2023 |  | Expected loss rate |  | Carrying amount |  | Loss allowance
|  |  |  | (In millions of Korean won)
Not due or overdue less than 90 days |  | — | % |  | ₩ | 3,637 |  |  | ₩ | — |
More than 90 days ~ Less than 180 days |  | — | % |  | — |  |  | — |
More than 180 days ~ Less than 270 days |  | — | % |  | — |  |  | — |
More than 270 days ~ Less than 1 year |  | — | % |  | — |  |  | — |
More than 1 year |  | 100 | % |  | 5 |  |  | 5 |
Total |  |  |  | ₩ | 3,642 |  |  | ₩ | 5 |

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